Definitions
infectious disease
diseases that occur because of agents invading the body
Muscular
The muscular system moves our body to help us evade predators and avoid injury
Function
To respond to germs and injuries and to prevent infection
Herpes simplex virus
cause of oral herpes
indistinguishable from other herpes under a microscope
list some examples of infectious diseases
common cold, HIV, flu
vaccination
the introduction of antigens underneath the skin, allowing for the body to go through a primary immune response, has helped to control diseases
Skeletal System
Bones are Hard and protect your soft vital organs from injury also gives you structure so you can run away from danger
Lymph nodes
Make a filter- all the body's white blood cells
Rabies Virus
causes fatal encephalitis
follow bite form infected mammal
non-infectious disease
not caused by pathogens, cannot be transmitted from 1 organism to another
antibody
a y-shaped molecule that inactivates viruses (come from plasma)
Skull
Protects your brain
Adaptive immunity
The second kind of protection is adaptive (or active) immunity, which develops throughout our lives. Adaptive immunity involves the lymphocytes and develops as people are exposed to diseases or immunized against diseases through vaccination.
Yellow fever
A mosquito-borne viral disease a.k.a. yellow jack; symptoms include fever, bloody nose, headache, nausea, muscle pain, vomiting, and jaundice.
list 4 challenges to the immune system
1).allergy-immune response to an antigen not a threat
2).autoimmune disease-disease where immune system builds up antibodies and attacks own cells
3).already sick person-can't fight off additional infections
4).medications-chemo,steriods-influence immune system
antigen
any substance that the immune system can recognize and react with (pathogens, pollen, venom, bacterial toxins, transfused blood or organs with incompatible blood types)
Integumentary System
The integumentary system includes the skin, which is the outer protective covering of the body it is our body's first line of defense against injury
Passive immunity
example, antibodies in a mother's breast milk give a baby temporary immunity to diseases the mother has been exposed to. This can help protect the baby against infection during the early years of childhood.
Meningitis
Membranes around the spinal cord and the brain.
what are some ways that the human body protects itself against disease?
skin(loses 1 million dead cells in an hour);blood(wound bleeds bringing immune cells to fight pathogens);eye(enzymes in the tears kill bacteria);nose and mouth(mucous membrane);clots(prevent pathogens from entering);inflammatory process(brings cells to fight and isolate infection);immune system (produces antibodies to fight off pathogens)
immune response
the reaction of the body against an antigen
immune system
Your immune system protects your body by detecting and fighting harmful things that invade your body.
Is Everyone's immune system is the same True or False.
Everyone's immune system is different. Some people never seem to get infections, whereas others seem to be sick all the time. As people get older, they usually become immune to more germs as the immune system comes into contact with more and more of them. That's why adults and teens tend to get fewer colds than kids — their bodies have learned to recognize and immediately attack many of the viruses that cause colds.
parasites
As small as a protozoa and as big as a tap worm
-Chagas disease; most common among latin americans
-Neurocysticercosis; singel most common infections cause of seizures
name 3 ways to prevent and fight disease
1).pastuerization-process of heating milk to kill the bacteria
2).vaccines-given to build up immunity and resistance to pathogens by injecting dead viruses
3).antibodies-medications given to kill bacteria, 1st discovered by Alexander Fleming